#ifndef __LB_H__
#define __LB_H__
#include "log.h"
#include <GL/glut.h>
#include "polygon.h"
#include "type.h"
int LBLineClipTest(float p,float q,float &umax,float &umin);
void LBLineClip(Polygon<double> region, Line<double> line) ;
#endif //__LB_H__